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Municipal solid waste heat treatment-chemical chain gasification coupling hydrogen production system and method

A municipal solid waste and chemical chain technology, applied in the field of waste treatment, can solve the problems of containing and restricting the promotion and application of waste incineration, and achieve the effects of avoiding the generation of dioxin, improving the oil yield and oil-water separation effect, and saving costs

Active Publication Date: 2022-04-05
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The incineration flue gas contains a large amount of acid gas, organic pollutants, particulate matter and heavy metals, which has become a bottleneck restricting the promotion and application of waste incineration.

Method used

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  • Municipal solid waste heat treatment-chemical chain gasification coupling hydrogen production system and method
  • Municipal solid waste heat treatment-chemical chain gasification coupling hydrogen production system and method
  • Municipal solid waste heat treatment-chemical chain gasification coupling hydrogen production system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0072] Such as figure 1 and figure 2 As shown, the municipal solid waste heat treatment-chemical looping gasification coupled hydrogen production system in this embodiment includes a pretreatment unit, a heat treatment unit, a chemical looping gasification coupled hydrogen production unit and a waste heat utilization unit connected in sequence;

[0073] The pretreatment unit includes a dry-wet sorting device 1-2 and a feed hopper 1-1 connected to the dry-wet sorting device 1-2, and the first outlet of the dry-wet sorting device 1-2 is successively It is connected with the first screw feeder 1-3 and the first crushing equipment 1-4, the outlet of the first crushing equipment 1-4 is connected with the mixing tank 1-5, and the dry and wet separation equipment 1-2 The second outlet of the second screw feeder is connected with the second screw feeder 1-6 and the second crushing equipment 1-7 in turn;

[0074] The heat treatment unit includes a first heat treatment reactor 2-1 co...

Embodiment 2

[0093] In this embodiment, wet combustible garbage is selected from kitchen waste, and the proportion of kitchen waste is shown in Table 1, wherein the base water of kitchen waste is 80% (wt), and dry combustible garbage is selected from waste plastics and waste rubber, household garbage The analytical data are shown in Table 2, and the analytical results are air-dry bases:

[0094] Table 1 The proportion of types of kitchen waste

[0095]

[0096] Table 2 Domestic waste analysis data

[0097]

[0098] In this example, the feed rate of municipal solid waste is 50kg / h, and the mass ratio of wet combustible waste and dry combustible waste entering the heat treatment system is 7:3, wherein the mass ratio of waste plastics and waste rubber in dry combustible waste is 1: 1.

[0099] This embodiment includes the following steps:

[0100] Step 1. Pretreatment: The municipal solid waste is sent to the dry and wet sorting equipment 1-2 through the hopper 1-1 for separation to ...

Embodiment 3

[0111] Wet combustible waste selects biomass among the present embodiment, and wherein the receiving base of biomass is 40% (wt) in total moisture, and dry combustible waste selects waste rubber and paper, and the analysis data of house refuse is as shown in table 4, and analysis result is Air dry basis:

[0112] Table 4 Domestic waste analysis data

[0113]

[0114]

[0115] In this example, the feed rate of municipal solid waste is 50kg / h, the mass ratio of wet combustible waste and dry combustible waste entering the heat treatment system is 7:3, and the mass ratio of waste rubber and paper in dry combustible waste is 1:1 .

[0116] This embodiment includes the following steps:

[0117] Step 1. Pretreatment: The municipal solid waste is sent to the dry and wet sorting equipment 1-2 through the hopper 1-1 for separation to obtain wet combustible garbage and dry combustible garbage, and then the wet combustible garbage is fed through the first screw The machine 1-3 is...

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Abstract

The invention discloses a municipal solid waste heat treatment-chemical chain gasification coupling hydrogen production system and method. The system comprises a pretreatment unit, a heat treatment unit, a chemical chain gasification coupling hydrogen production unit and a waste heat utilization unit which are connected in sequence. The method comprises the following steps: 1, separating and crushing the municipal solid waste into slurry and particles; 2, carrying out a first heat treatment reaction on the slurry to obtain a water phase, an oil phase and a slag phase, and carrying out a second heat treatment reaction on the particles to obtain tar gas and semicoke; step 3, heating the water vapor and the oil phase, gasifying the heated water vapor and oil phase together with the tar gas and the semi-coke powder in the presence of an oxidation-state oxygen carrier to obtain crude synthesis gas, and carrying out hydrogen production reaction on the reduction-state oxygen carrier and the water vapor to obtain crude hydrogen; and 4, heat recovery. By arranging different treatment units, municipal solid waste is classified and converted into solid-phase, liquid-phase and gas-phase raw materials, and chemical looping circulation coupling hydrogen production is carried out, so that clean and efficient utilization is realized; the oxygen carrier is adopted, so that the cost is saved, and the chemical chain reaction process is continuously carried out.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a system and method for hydrogen production coupled with thermal treatment of municipal solid waste and chemical chain gasification. Background technique [0002] At present, the treatment methods of municipal solid waste mainly include sanitary landfill, composting and incineration. [0003] Sanitary landfill is a treatment method that fills garbage into valleys, flats or pits, and makes physical, chemical and biological changes after compaction and covering soil, decomposes organic matter, and achieves harmless treatment. However, after landfilling, the generated methane and landfill leachate will cause serious pollution to the atmosphere, soil, surface water and groundwater, and the landfill also occupies a large amount of land resources and damages the ecological environment. [0004] Composting is a treatment method that uses microorganisms to decompos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10J3/00C01B3/12C01B3/34C10B53/00
CPCY02P20/129
Inventor 谢欣馨贺根良郑亚兰韦孙昌张瑜徐宏伟袁善录葛启明赵蒙张晓慧
Owner THE NORTHWEST RES INST OF CHEM IND
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